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Composting Times

A very frequently asked question is "How long does it take to make compost?" The answer to this question begins with "Well, it depends..."

The time it takes to decompose materials, can be as long as a year or more. Or, as many composter manufacturers can be as little as 30 days!

Compost Time - Just 30 days:

Under ideal conditions, you can indeed make finished compost in as little as 30 days. This means:

  • Compost material is shredded into fine pieces, or are already fine (like grass)

  • There is a healthy mixture of Nitrogen and Carbon Materials, 60-80% Nitrogen.

  • The air temperature is warm

  • There is good air circulation. Compost tumblers are perfect for this.

  • The materials are turned and mixed frequently, if not daily. Again, compost tumblers aid in this process step.

  • There are sufficient micro-organisms in the material. To accomplish this, you may need to add micro-organisms when you begin a batch of compost.

  • The compost material is kept moist.

Compost Time -  a Year or More 

 A passive, inactive pile can sit there on the ground for a long, long time. Pile up a bunch of dead, dried out leaves, or add big, thick pieces of material, like dried up corn or sunflower stalks. It will decompose, ever so slowly. Nature will perform the task...eventually. If you are not in a hurry for finished compost, or do not have a lot of time to tend to the compost pile, a passive compost pile may be just fine.

Compost Time - Between 30 Days and a Year

Chances are your finished compost will take somewhere between the two extremes above. Most of us do not have the time to do al the things necessary to decompose materials in just 30 days. Seldom, do we have all of the materials finely shredded. And, frequently, the other conditions needed for speedy decomposition, are less than ideal.

If you want to speed up your composting project, anything you can do, that emulates making compost in 30 days, will speed up decomposition.

Related Reading

How to Compost

Nitrogen and Carbon Compost Materials

Compost Activators and Inoculators

Preparing Compost Materials


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